Testing base



FIG. 1 is a perspective view of a first embodiment of a testing base embodying our new design;

FIG. 2 is a front elevational view of the testing base shown in FIG. 1;

FIG. 3 is a right side view of the testing base shown in FIG. 1;

FIG. 4 is a left side elevational view of the testing base shown in FIG. 1;

FIG. 5 is a rear side elevational view of the testing base shown in FIG. 1;

FIG. 6 is a top plan view of the testing base shown in FIG. 1;

FIG. 7 is a bottom plan view of the testing base shown in FIG. 1;

FIG. 8 is a perspective view of a second embodiment of a testing base embodying our new design;

FIG. 9 is a front elevational view of the testing base shown in FIG. 8;

FIG. 10 is a right side view of the testing base shown in FIG. 8;

FIG. 11 is a left side elevational view of the testing base shown in FIG. 8;

FIG. 12 is a rear side elevational view of the testing base shown in FIG. 8;

FIG. 13 is a top plan view of the testing base shown in FIG. 8; and,

FIG. 14 is a bottom plan view of the testing base shown in FIG. 8. 

The ornamental design for a testing base, as shown and described. 